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      <a href="/2017/03/18/angular-free-13-service-work-with-directive/" title="玩转Angular1(13)--服务与指令的配合使用" itemprop="url">玩转Angular1(13)--服务与指令的配合使用</a>
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      <a href="https://godbasin.github.io" title="被删">被删</a>
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    <time datetime="2017-03-17T23:33:56.000Z" itemprop="datePublished">2017-03-18</time>
    更新日期:<time datetime="2018-12-18T15:26:32.396Z" itemprop="dateModified">2018-12-18</time>
    
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			<strong class="toc-title">文章目录</strong>
		<ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#确认弹窗服务"><span class="toc-number">1.</span> <span class="toc-text">确认弹窗服务</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#基本思路"><span class="toc-number">1.1.</span> <span class="toc-text">基本思路</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#AlertMsg-ts"><span class="toc-number">1.2.</span> <span class="toc-text">AlertMsg.ts</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#确认弹窗组件"><span class="toc-number">2.</span> <span class="toc-text">确认弹窗组件</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#基本思路-1"><span class="toc-number">2.1.</span> <span class="toc-text">基本思路</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#alertMsg-directive-ts"><span class="toc-number">2.2.</span> <span class="toc-text">alertMsg.directive.ts</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#alertMsg-template-html"><span class="toc-number">2.3.</span> <span class="toc-text">alertMsg.template.html</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#注册指令并使用"><span class="toc-number">2.4.</span> <span class="toc-text">注册指令并使用</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#结束语"><span class="toc-number">3.</span> <span class="toc-text">结束语</span></a></li></ol>
		</div>
		
		<p>AngularJS(v1.5.8)已经成为项目们的基本框架，《玩转Angular1》系列用于记录项目中的一些好玩或者比较特别的思路。<br>本文简单介绍通过服务来调用Directive指令的过程。<br><a id="more"></a></p>
<h2 id="确认弹窗服务"><a href="#确认弹窗服务" class="headerlink" title="确认弹窗服务"></a>确认弹窗服务</h2><hr>
<h3 id="基本思路"><a href="#基本思路" class="headerlink" title="基本思路"></a>基本思路</h3><p>有时候，我们需要在控制器逻辑中进行确认操作，例如删除、注销等一些操作，是需要用户进行确认的。<br>这时候我们想要这样的一个服务，用来进行确认操作：</p>
<ul>
<li>调用函数，传入title、text等参数，显示确认的信息</li>
<li>函数返回一个Promise，可使用<code>.then</code>来进行后续的处理</li>
<li>then函数传入两个回调，分别是确认继续的回调，和取消的回调</li>
</ul>
<p>我们的服务还需要对外提供以下功能：</p>
<ul>
<li>设置函数<code>SetAlertMsg</code></li>
<li>是否已设置弹窗<code>isAlertMsgSet</code></li>
<li>设置的数据<code>GetAlertMsgParams</code></li>
<li>取消函数<code>AlertMsgReject</code></li>
<li>确认函数<code>AlertMsgResolve</code></li>
</ul>
<p>后面的几个，主要是为了在指令中使用。</p>
<h3 id="AlertMsg-ts"><a href="#AlertMsg-ts" class="headerlink" title="AlertMsg.ts"></a>AlertMsg.ts</h3><figure class="highlight javascript"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div><div class="line">49</div><div class="line">50</div><div class="line">51</div><div class="line">52</div><div class="line">53</div><div class="line">54</div><div class="line">55</div><div class="line">56</div><div class="line">57</div><div class="line">58</div><div class="line">59</div><div class="line">60</div><div class="line">61</div><div class="line">62</div><div class="line">63</div><div class="line">64</div><div class="line">65</div><div class="line">66</div><div class="line">67</div><div class="line">68</div><div class="line">69</div><div class="line">70</div><div class="line">71</div><div class="line">72</div><div class="line">73</div><div class="line">74</div><div class="line">75</div><div class="line">76</div><div class="line">77</div><div class="line">78</div><div class="line">79</div><div class="line">80</div><div class="line">81</div><div class="line">82</div><div class="line">83</div><div class="line">84</div><div class="line">85</div><div class="line">86</div></pre></td><td class="code"><pre><div class="line"><span class="comment">// app/shared/services/AlertMsg.ts</span></div><div class="line"><span class="comment">// 提示确认弹窗</span></div><div class="line"><span class="comment">// SetAlertMsg(&#123;</span></div><div class="line"><span class="comment">//     confirmText: '我是确认键',</span></div><div class="line"><span class="comment">//     cancelText: '我是取消键',</span></div><div class="line"><span class="comment">//     title: '我是头部',</span></div><div class="line"><span class="comment">//     text: '我是说明文字文字文字',</span></div><div class="line"><span class="comment">// &#125;).then(() =&gt; &#123;</span></div><div class="line"><span class="comment">//     console.log('点击了确定');</span></div><div class="line"><span class="comment">// &#125;, () =&gt; &#123;</span></div><div class="line"><span class="comment">//     console.log('关闭');</span></div><div class="line"><span class="comment">// &#125;);</span></div><div class="line"></div><div class="line">interface IAlertMsg &#123;</div><div class="line">    confirmText?: string;</div><div class="line">    cancelText?: string;</div><div class="line">    title?: string;</div><div class="line">    icon?: string;</div><div class="line">    text: string;</div><div class="line">&#125;</div><div class="line"></div><div class="line"><span class="class"><span class="keyword">class</span> <span class="title">AlertMsgService</span> </span>&#123;</div><div class="line">    private isSet: boolean = <span class="literal">false</span>;</div><div class="line">    private params: IAlertMsg = <span class="literal">undefined</span>;</div><div class="line">    private resolve: any = <span class="literal">undefined</span>;</div><div class="line">    private reject: any = <span class="literal">undefined</span>;</div><div class="line"></div><div class="line">    <span class="keyword">constructor</span>() &#123;</div><div class="line">        <span class="comment">// 单独提取方法需要绑定this</span></div><div class="line">        <span class="keyword">this</span>.getIsSet = <span class="keyword">this</span>.getIsSet.bind(<span class="keyword">this</span>);</div><div class="line">        <span class="keyword">this</span>.getParams = <span class="keyword">this</span>.getParams.bind(<span class="keyword">this</span>);</div><div class="line">        <span class="keyword">this</span>.setMsg = <span class="keyword">this</span>.setMsg.bind(<span class="keyword">this</span>);</div><div class="line">        <span class="keyword">this</span>.msgReject = <span class="keyword">this</span>.msgReject.bind(<span class="keyword">this</span>);</div><div class="line">        <span class="keyword">this</span>.msgResolve = <span class="keyword">this</span>.msgResolve.bind(<span class="keyword">this</span>);</div><div class="line">    &#125;</div><div class="line"></div><div class="line">    <span class="comment">// 获取是否设置</span></div><div class="line">    getIsSet() &#123;</div><div class="line">        <span class="keyword">return</span> <span class="keyword">this</span>.isSet;</div><div class="line">    &#125;</div><div class="line"></div><div class="line">    <span class="comment">// 获取设置的数据</span></div><div class="line">    getParams() &#123;</div><div class="line">        <span class="keyword">return</span> <span class="keyword">this</span>.params;</div><div class="line">    &#125;</div><div class="line"></div><div class="line">    <span class="comment">// 设置参数，并返回promise</span></div><div class="line">    setMsg(params: IAlertMsg) &#123;</div><div class="line">        <span class="keyword">this</span>.isSet = <span class="literal">true</span>;</div><div class="line">        <span class="keyword">this</span>.params = params;</div><div class="line"></div><div class="line">        <span class="keyword">return</span> <span class="keyword">new</span> <span class="built_in">Promise</span>(<span class="function">(<span class="params">resolve, reject</span>) =&gt;</span> &#123;</div><div class="line">            <span class="keyword">this</span>.resolve = resolve;</div><div class="line">            <span class="keyword">this</span>.reject = reject;</div><div class="line">        &#125;);</div><div class="line">    &#125;</div><div class="line"></div><div class="line">    <span class="comment">// reject并清除数据</span></div><div class="line">    msgReject() &#123;</div><div class="line">        <span class="keyword">if</span> (<span class="keyword">typeof</span> <span class="keyword">this</span>.reject === <span class="string">'function'</span>) &#123; <span class="keyword">this</span>.reject(); &#125;</div><div class="line">        <span class="keyword">this</span>.clearMsg();</div><div class="line">    &#125;</div><div class="line"></div><div class="line">    <span class="comment">// resolve并清除数据</span></div><div class="line">    msgResolve() &#123;</div><div class="line">        <span class="keyword">if</span> (<span class="keyword">typeof</span> <span class="keyword">this</span>.resolve === <span class="string">'function'</span>) &#123; <span class="keyword">this</span>.resolve(); &#125;</div><div class="line">        <span class="keyword">this</span>.clearMsg();</div><div class="line">    &#125;</div><div class="line"></div><div class="line">    <span class="comment">// 清除数据</span></div><div class="line">    private clearMsg() &#123;</div><div class="line">        <span class="keyword">this</span>.params = <span class="literal">undefined</span>;</div><div class="line">        <span class="keyword">this</span>.isSet = <span class="literal">false</span>;</div><div class="line">    &#125;</div><div class="line">&#125;</div><div class="line"></div><div class="line"><span class="keyword">const</span> AlertMsg = <span class="keyword">new</span> AlertMsgService();</div><div class="line"><span class="keyword">const</span> &#123;getParams, getIsSet, setMsg, msgReject, msgResolve&#125; = AlertMsg;</div><div class="line"><span class="keyword">export</span> &#123;</div><div class="line">    getIsSet <span class="keyword">as</span> isAlertMsgSet,</div><div class="line">    setMsg <span class="keyword">as</span> SetAlertMsg,</div><div class="line">    getParams <span class="keyword">as</span> GetAlertMsgParams,</div><div class="line">    msgReject <span class="keyword">as</span> AlertMsgReject,</div><div class="line">    msgResolve <span class="keyword">as</span> AlertMsgResolve,</div><div class="line">&#125;;</div><div class="line"><span class="keyword">export</span> <span class="keyword">default</span> AlertMsg;</div></pre></td></tr></table></figure>
<h2 id="确认弹窗组件"><a href="#确认弹窗组件" class="headerlink" title="确认弹窗组件"></a>确认弹窗组件</h2><hr>
<h3 id="基本思路-1"><a href="#基本思路-1" class="headerlink" title="基本思路"></a>基本思路</h3><p>弹窗组件需要满足的一些需求：</p>
<ul>
<li>获取弹窗服务的状态，来控制是否显示</li>
<li>获取弹窗服务的数据，并进行相应的展示控制</li>
<li>取消或关闭时，调用reject</li>
<li>添加按键Esc事件，进行取消或关闭</li>
<li>确认时，调用resolve回调</li>
</ul>
<h3 id="alertMsg-directive-ts"><a href="#alertMsg-directive-ts" class="headerlink" title="alertMsg.directive.ts"></a>alertMsg.directive.ts</h3><figure class="highlight javascript"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div></pre></td><td class="code"><pre><div class="line"><span class="keyword">export</span> <span class="keyword">default</span> (ngModule) =&gt; &#123;</div><div class="line">    ngModule.directive(<span class="string">'alertMsg'</span>, [<span class="string">'$parse'</span>, <span class="function"><span class="keyword">function</span> (<span class="params">$parse</span>) </span>&#123;</div><div class="line">        <span class="keyword">return</span> &#123;</div><div class="line">            <span class="attr">restrict</span>: <span class="string">'AE'</span>,</div><div class="line">            <span class="attr">templateUrl</span>: <span class="string">'./alertMsg.template.html'</span>,</div><div class="line">            <span class="attr">transclude</span>: <span class="literal">true</span>,</div><div class="line">            <span class="attr">replace</span>: <span class="literal">true</span>,</div><div class="line">            link(scope, element, attrs) &#123;</div><div class="line">                <span class="comment">// watch是否设置，来控制是否显示</span></div><div class="line">                scope.$watch(isAlertMsgSet, <span class="function"><span class="keyword">function</span> (<span class="params">newValue, oldValue</span>) </span>&#123;</div><div class="line">                    <span class="keyword">if</span> (newValue === <span class="literal">true</span>) &#123;</div><div class="line">                        <span class="comment">// 获取相应的现实数据</span></div><div class="line">                        scope.params = GetAlertMsgParams();</div><div class="line">                        <span class="comment">// 设置按下Esc键时默认取消</span></div><div class="line">                        EscKeyUp(scope, () =&gt; &#123;</div><div class="line">                            scope.close();</div><div class="line">                        &#125;);</div><div class="line">                    &#125;</div><div class="line">                &#125;);</div><div class="line">                <span class="comment">// 关闭或者取消时，调用reject</span></div><div class="line">                scope.close = <span class="function"><span class="params">()</span> =&gt;</span> &#123;</div><div class="line">                    AlertMsgReject();</div><div class="line">                    scope.params = <span class="literal">undefined</span>;</div><div class="line">                &#125;;</div><div class="line">                <span class="comment">// 确认时，调用resolve</span></div><div class="line">                scope.submit = <span class="function"><span class="params">()</span> =&gt;</span> &#123;</div><div class="line">                    AlertMsgResolve();</div><div class="line">                    scope.params = <span class="literal">undefined</span>;</div><div class="line">                &#125;;</div><div class="line">            &#125;</div><div class="line">        &#125;;</div><div class="line">    &#125;])</div><div class="line">&#125;;</div></pre></td></tr></table></figure>
<p>关于EscKeyUp服务，有兴趣或者疑问的小伙伴可以到<a href="https://godbasin.github.io/2017/03/05/angular-free-9-event-callback-queue/">《玩转Angular1(9)–按键事件队列KeyUp服务》</a>查看。</p>
<h3 id="alertMsg-template-html"><a href="#alertMsg-template-html" class="headerlink" title="alertMsg.template.html"></a>alertMsg.template.html</h3><figure class="highlight html"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div></pre></td><td class="code"><pre><div class="line"><span class="tag">&lt;<span class="name">aside</span> <span class="attr">ng-show</span>=<span class="string">"params"</span> <span class="attr">class</span>=<span class="string">"alert-module confirm-msg"</span>&gt;</span></div><div class="line">    <span class="tag">&lt;<span class="name">section</span> <span class="attr">on-focus-lost</span>=<span class="string">"close()"</span>&gt;</span></div><div class="line">        <span class="tag">&lt;<span class="name">header</span> <span class="attr">ng-show</span>=<span class="string">"params.title"</span>&gt;</span>&#123;&#123; params.title &#125;&#125;<span class="tag">&lt;/<span class="name">header</span>&gt;</span></div><div class="line">        <span class="tag">&lt;<span class="name">article</span>&gt;</span></div><div class="line">            <span class="tag">&lt;<span class="name">p</span> <span class="attr">ng-show</span>=<span class="string">"params.text"</span>&gt;</span>&#123;&#123;params.text&#125;&#125;<span class="tag">&lt;/<span class="name">p</span>&gt;</span></div><div class="line">        <span class="tag">&lt;/<span class="name">article</span>&gt;</span></div><div class="line">        <span class="tag">&lt;<span class="name">footer</span>&gt;</span></div><div class="line">            <span class="tag">&lt;<span class="name">a</span> <span class="attr">class</span>=<span class="string">"button-2"</span> <span class="attr">ng-click</span>=<span class="string">"submit()"</span>&gt;</span>&#123;&#123;params.confirmText || '确定'&#125;&#125;<span class="tag">&lt;/<span class="name">a</span>&gt;</span></div><div class="line">            <span class="tag">&lt;<span class="name">a</span> <span class="attr">class</span>=<span class="string">"button-2 secondary"</span> <span class="attr">ng-click</span>=<span class="string">"close()"</span>&gt;</span>&#123;&#123;params.cancelText || '取消'&#125;&#125;<span class="tag">&lt;/<span class="name">a</span>&gt;</span></div><div class="line">        <span class="tag">&lt;/<span class="name">footer</span>&gt;</span></div><div class="line">    <span class="tag">&lt;/<span class="name">section</span>&gt;</span></div><div class="line"><span class="tag">&lt;/<span class="name">aside</span>&gt;</span></div></pre></td></tr></table></figure>
<p>这里，若我们不传入title参数，是不会显示头部的，这也是配置的一种。<br>而关于[on-focus-lost]指令，前面<a href="https://godbasin.github.io/2017/03/10/angular-free-10-directive-to-add-event-listener/">《玩转Angular1(10)–使用Directive指令来添加事件监听》</a>也提到过，其实这里我们的EscKeyUp服务，也可以转成[on-esc]指令来实现的。</p>
<h3 id="注册指令并使用"><a href="#注册指令并使用" class="headerlink" title="注册指令并使用"></a>注册指令并使用</h3><ul>
<li>在<code>bootstrap.ts</code>启动文件中注册指令</li>
</ul>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line">...</div><div class="line">import AlertDirective <span class="keyword">from</span> <span class="string">'./shared/components/alertMsg.directive'</span>;</div><div class="line">[</div><div class="line">    ...</div><div class="line">    AlertDirective</div><div class="line">].forEach(<span class="function">(<span class="params">service</span>) =&gt;</span> service(ngModule));</div></pre></td></tr></table></figure>
<ul>
<li>在登录的时候使用</li>
</ul>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div></pre></td><td class="code"><pre><div class="line"><span class="comment">// login.controller.ts</span></div><div class="line">SetAlertMsg(&#123; <span class="attr">text</span>: <span class="string">'确认？'</span> &#125;).then(<span class="function"><span class="params">()</span> =&gt;</span> &#123;</div><div class="line">    <span class="comment">// 登录</span></div><div class="line">&#125;, () =&gt;&#123;</div><div class="line">    <span class="comment">// 取消</span></div><div class="line">&#125;);</div></pre></td></tr></table></figure>
<ul>
<li>在<code>index.html</code>中全局注入指令</li>
</ul>
<figure class="highlight html"><table><tr><td class="gutter"><pre><div class="line">1</div></pre></td><td class="code"><pre><div class="line"><span class="tag">&lt;<span class="name">aside</span> <span class="attr">alert-msg</span>&gt;</span><span class="tag">&lt;/<span class="name">aside</span>&gt;</span></div></pre></td></tr></table></figure>
<p>效果图：<br><img src="https://github-imglib-1255459943.cos.ap-chengdu.myqcloud.com/1485230275%281%29.png" alt="image"></p>
<h2 id="结束语"><a href="#结束语" class="headerlink" title="结束语"></a>结束语</h2><hr>
<p>这节主要简单介绍服务和组件配合着使用的过程，当然其实要实现这样的设计，还有一些其他的方法，小伙伴们也可以去想一下啦。还可以把弹窗模块进行拓展，加入可配置输入框、选择框等等去做呢。<br><a href="https://github.com/godbasin/godbasin.github.io/tree/blog-codes/angular-free/13-service-work-with-directive" target="_blank" rel="external">此处查看项目代码</a><br><a href="http://angular-free.godbasin.com/angular-free-13-service-work-with-directive/index.html" target="_blank" rel="external">此处查看页面效果</a></p>
  
		
		<p style="margin-top:50px;">查看Github有更多内容噢：<a href="https://github.com/godbasin">https://github.com/godbasin</a></p>
	</div>
	<img src="https://github-imglib-1255459943.cos.ap-chengdu.myqcloud.com/2code2.jpg" width="200" height="200" style="display:block;margin: 0 auto;" />
	<p style="text-align: center;margin-top: 10px;margin-bottom: 20px;">码生艰难，写文不易，给我家猪囤点猫粮了喵~</p>
	<div class="author-right">
  		<p>作者：被删</p>
  		<p>出处：<a href="https://godbasin.github.io">https://godbasin.github.io</a></p>
  		<p>本文版权归作者所有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。</p>
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  <strong class="toc-title">文章目录</strong>
  <ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#确认弹窗服务"><span class="toc-number">1.</span> <span class="toc-text">确认弹窗服务</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#基本思路"><span class="toc-number">1.1.</span> <span class="toc-text">基本思路</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#AlertMsg-ts"><span class="toc-number">1.2.</span> <span class="toc-text">AlertMsg.ts</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#确认弹窗组件"><span class="toc-number">2.</span> <span class="toc-text">确认弹窗组件</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#基本思路-1"><span class="toc-number">2.1.</span> <span class="toc-text">基本思路</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#alertMsg-directive-ts"><span class="toc-number">2.2.</span> <span class="toc-text">alertMsg.directive.ts</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#alertMsg-template-html"><span class="toc-number">2.3.</span> <span class="toc-text">alertMsg.template.html</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#注册指令并使用"><span class="toc-number">2.4.</span> <span class="toc-text">注册指令并使用</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#结束语"><span class="toc-number">3.</span> <span class="toc-text">结束语</span></a></li></ol>
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